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Finding the Fourth Proportional to 539,660.76, 744,712.56 and 297,938.40

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Solution

The fourth proportional to 539,660.76, 744,712.56 and 297,938.40 is: 411,144.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,660.76 : 744,712.56 = 297,938.40 : x
  2. Step 2: Convert to fraction form
    539,660.76/744,712.56 = 297,938.40/x
  3. Step 3: Cross multiply
    539,660.76x = 744,712.56 × 297,938.40
  4. Step 4: Simplify right side
    539,660.76x = 221,878,468,586.30
  5. Step 5: Solve for x
    x = 221,878,468,586.30/539,660.76
  6. Step 6: Final answer
    x = 411,144.34

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Double scale
Find fourth proportional to 539,661.76, 744,713.94 and 297,939.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.